An electronic cigarette capable of automatically adjusting and switching oil and air intake

Abstract

The application relates to an electronic cigarette capable of automatically adjusting and switching oil and air, wherein oil passing holes and perforations are respectively arranged on a sealing silica gel and an atomizing core support and matched with upper ends of oil and air linkage switches; an air inlet hole is arranged on a bottom cover and matched with lower ends of the oil and air linkage switches; an electromagnetic valve assembly is arranged on the oil and air linkage switches; an air flow sensing switch is arranged on an air path and senses the size of suction force and transmits a signal into a micro control unit of a PCB; the micro control unit outputs corresponding signals to an electromagnetic valve control circuit according to the input signal; the electromagnetic valve control circuit controls the action of the electromagnetic valve assembly according to the input signal; the action of the electromagnetic valve assembly controls the axial up-down movement of both ends of the oil and air linkage switches to synchronously open or close the oil passing holes and the air inlet hole; and the switch oil tank, an oil path from the oil passing hole to the oil inlet hole and an air path from the air inlet hole to an atomizing core assembly. The application solves the problem caused by the asynchronous switching of oil and air and can be applied to the electronic cigarette.

Description

Technical Field

[0001] This invention relates to the field of electronic cigarette technology, and specifically to an electronic cigarette that automatically adapts to and switches on / off oil and air intake. Background Technology

[0002] With the continuous development of e-cigarette technology, the market has placed higher demands on the adaptability of products to various usage scenarios. Currently, most e-cigarette products on the market have significant limitations in terms of usage scenarios. For example, when traveling by airplane, changes in air pressure can cause e-liquid to leak from the reservoir; similarly, leakage can occur at high altitudes due to air pressure differences; furthermore, placing the product in high-temperature environments such as inside a car can also lead to varying degrees of leakage due to the thermal expansion of the e-liquid. These problems not only affect the user experience but also result in e-liquid waste and device contamination.

[0003] To address the issue of e-liquid leakage, some existing products have added an e-liquid supply switch, allowing manual control to open or close the e-liquid inlet. However, this design generally suffers from a single-function technical flaw: the e-liquid supply switch only controls the on / off state of the e-liquid inlet and cannot simultaneously control the air intake channel. Specifically, if the user closes the e-liquid inlet to prevent leakage, and then forgets to reopen the switch during subsequent use, while the air intake channel remains open, the atomizer coil will continue to burn without e-liquid supply, easily leading to burnt coil, a burnt smell, severely affecting the vaping experience, and even shortening the coil's lifespan, thus reducing product reliability.

[0004] Therefore, there is an urgent need for a switching structure that can simultaneously control the oil inlet and air inlet channels to prevent oil leakage and effectively avoid the problem of burnt coils, thereby improving the stability and user experience of e-cigarettes in different usage scenarios. Summary of the Invention

[0005] The technical problem solved by this invention is to provide an electronic cigarette that automatically adapts to and switches on / off oil and air intake; it can simultaneously achieve automatic adaptive control of the oil and air intake channels.

[0006] The technical solution of the present invention to solve the above-mentioned technical problems is:

[0007] The electronic cigarette includes an oil tank, sealing silicone, an atomizer core assembly, an atomizer core support, a bottom cover, and a PCB board. The atomizer core assembly is axially arranged inside the oil tank. An oil inlet is formed at the bottom of the atomizer core assembly. Sealing silicone is used to seal the lower end of the atomizer core assembly and the inner wall support of the oil tank. An atomizer core support is positioned below the atomizer core assembly. The bottom cover is connected to the bottom of the oil tank. The PCB board is located inside the bottom cover. The cigarette also includes an oil inlet / air inlet linkage switch, an airflow sensing switch, and a solenoid valve control circuit. An oil passage hole and a through hole, respectively, are formed on the sealing silicone and the atomizer core support to mate with the upper end of the oil inlet / air inlet linkage switch. An air inlet is formed on the bottom cover to mate with the lower end of the oil inlet / air inlet linkage switch. When the oil inlet / air inlet linkage switch moves axially up and down, it can simultaneously open or close the oil passage hole and the air inlet, switching the oil path from the oil tank and oil passage hole to the oil inlet hole and the air path from the air inlet hole to the atomizer core assembly.

[0008] The oil inlet and air inlet linkage switch is equipped with a solenoid valve assembly; the airflow sensing switch is installed in the air path to sense the magnitude of the suction force and transmit the signal to the microcontroller unit on the PCB board; the microcontroller unit outputs a corresponding signal to the solenoid valve control circuit according to the input signal; the solenoid valve control circuit controls the action of the solenoid valve assembly according to the input signal, and the action of the solenoid valve assembly controls the axial up and down movement of both ends of the oil inlet and air inlet linkage switch.

[0009] The sealing silicone and the atomizing core support form an axial cavity; the oil inlet of the atomizing core assembly is located between the sealing silicone and the atomizing core support, and communicates with the aforementioned cavity.

[0010] The upper end of the oil inlet and air inlet linkage switch is one or two columnar axial columns; several oil passage grooves are arranged along the axial direction near the top of the axial column; when the oil inlet and air inlet linkage switch moves upward to the top and protrudes above the sealing silicone, a channel is formed between the oil passage hole and the oil passage groove to allow the e-liquid to pass through the sealing silicone.

[0011] The lower end of the oil and air intake linkage switch is columnar; the bottom cover protrudes upward along the air intake hole to form an air intake cylinder; the air intake cylinder forms an air intake groove axially; when the oil and air intake linkage switch moves upward to the top and protrudes above the sealing silicone, forming a channel for e-liquid to pass through the sealing silicone between the oil passage hole and the oil groove, the air intake groove opens, forming an air passage connecting the inner and outer sides of the bottom cover.

[0012] The solenoid valve assembly of the oil and air intake linkage switch includes a solenoid valve and a magnet; a steel pipe is axially arranged in the middle of the oil and air intake linkage switch; the steel pipe is fixed between the atomizing core support and the bottom cover; a magnet that can move axially relative to the steel pipe is arranged inside the steel pipe; the magnet is connected to the upper and lower ends of the oil and air intake linkage switch; the solenoid valve is arranged outside the steel pipe; when the solenoid valve is energized in the forward direction, it drives the magnet and the upper and lower ends of the oil and air intake linkage switch to move upward; when the solenoid valve is energized in the reverse direction, it drives the magnet and the upper and lower ends of the oil and air intake linkage switch to move downward.

[0013] The microcontroller unit of the PCB board is an integrated circuit of model QFEN24-3X3; the airflow sensing switch is an integrated circuit of model CSC581X; and the solenoid valve control circuit is mainly composed of an integrated circuit of model TC118S.

[0014] The first pin of the airflow sensor switch is connected to the fourth pin of the microcontroller unit, and the second pin is connected to the third pin of the microcontroller unit.

[0015] Pin 2 of the solenoid valve control circuit integrated circuit is connected to pin 21 of the microcontroller unit, and pin 3 is connected to pin 20 of the microcontroller unit;

[0016] The airflow sensor switch collects the suction airflow and converts the signal into an electrical signal; this signal is sent to the microcontroller unit via pin 1; the larger the collected airflow, the larger the output electrical signal value, and vice versa; the microcontroller unit determines the suction duration based on the second pin signal of the airflow sensor switch, which is used to control the output.

[0017] The microcontroller unit outputs square waves from pins 21 and 20 to control the solenoid valve control circuit. When pin 21 outputs a square wave and pin 20 outputs a low level, the solenoid valve control circuit controls the solenoid valve to rise; when pin 20 outputs a square wave and pin 21 outputs a low level, the solenoid valve control circuit controls the solenoid valve to fall. The output voltage is controlled by adjusting the duty cycle of the square waves from pins 21 and 20 to control the height to which the solenoid valve rises.

[0018] The duty cycle of the square wave on pins 21 and 20 of the microcontroller is determined by the signal magnitude output from pin 1 of the airflow sensing switch, and the signal magnitude is directly proportional to the duty cycle.

[0019] The electronic cigarette of this invention, which automatically adapts and synchronously adjusts the oil and air intake, has the following significant advantages over existing technologies: 1. Intelligent adaptive adjustment, optimizing the user experience. The airflow sensor switch identifies the user's inhalation force in real time and outputs a corresponding current to drive the solenoid valve, ensuring precise matching between the opening distance of the oil and air intake linkage switch and the inhalation force. Light inhalation achieves a small airflow and small oil intake, while strong inhalation achieves a large airflow and large oil intake, ensuring optimal atomization and flavor without manual adjustment by the user. 2. Synchronous linkage control, ensuring consistent oil and air supply. A single solenoid valve and magnetic repulsion drive mechanism enable synchronous opening, adjustment, and closing of the oil and air intake channels, fundamentally avoiding problems such as dry burning, oil leakage, or insufficient atomization caused by mismatched oil and air supply in traditional products. 3. Automatic safety protection, improving product reliability. After the product has been idle for 3-5 minutes, the system automatically outputs a reverse current to close the solenoid valve, simultaneously cutting off the oil and air supply functions. This effectively prevents accidental leakage and false triggering during idle periods, significantly extending product lifespan and improving safety. Fourth, the structure is simplified and the manufacturing cost is reduced. The traditional multi-part mechanical adjustment structure is replaced by solenoid valves and magnetic repulsion components, which reduces the number of parts, simplifies the assembly process, and is conducive to large-scale production and cost control. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings:

[0021] Figure 1 This is a side view of the electronic e-cigarette oil circuit and gas circuit of the present invention in the closed state;

[0022] Figure 2 yes Figure 1 AA section view;

[0023] Figure 3 yes Figure 2 BB section view;

[0024] Figure 4 This is a side view of the electronic e-cigarette oil circuit and air circuit of the present invention in the open state;

[0025] Figure 5 yes Figure 1 CC section view;

[0026] Figure 6 yes Figure 2 DD sectional view;

[0027] Figure 7 This is a perspective view of the oil and air intake linkage switch of the present invention;

[0028] Figure 8 This is a perspective view of the bottom cover of the present invention;

[0029] Figure 9This is a three-dimensional sectional view of the electronic e-cigarette oil circuit and air circuit of the present invention in the open state;

[0030] Figure 10 This is a circuit diagram of the electronic cigarette microcontroller unit, airflow sensing switch, and solenoid valve control circuit of the present invention. Detailed Implementation

[0031] The following embodiments are descriptions of specific implementations of the present invention. These descriptions are intended to facilitate understanding of the technical solutions of this application by those skilled in the art and are not intended to limit the scope of protection of the technical solutions of the present invention. All equivalent transformations that can be obtained from the description of the embodiments of the present invention should be within the scope of protection of the present invention.

[0032] like Figures 1 to 9 As shown, the electronic cigarette of the present invention includes an oil tank 1, an atomizing core assembly 2, a sealing silicone 3, an atomizing core support 4, a bottom cover 5, an oil and air inlet linkage switch 6, a PCB board 7, an airflow sensing switch 8, and a solenoid valve control circuit 9. The atomizing core assembly 2 is axially arranged inside the oil tank 1; an oil inlet hole 21 is formed at the bottom of the atomizing core assembly 2; the lower end of the atomizing core assembly 2 and the inner wall support of the oil tank 1 are sealed with sealing silicone 3; the atomizing core support 4 is arranged below the atomizing core assembly 2; the bottom cover 5 is connected to the bottom of the oil tank 1. The sealing silicone 3 and the atomizing core support 4 form a cavity axially upwards; the oil inlet hole 21 of the atomizing core assembly 2 is located between the sealing silicone 3 and the atomizing core support 4, and communicates with the aforementioned cavity.

[0033] like Figure 7 As shown, the upper end of the oil / air intake linkage switch 6 has one or two columnar axial columns; several oil passage grooves 61 are arranged axially near the top of the axial columns. Oil passage holes 31 and through holes that mate with the upper end of the oil / air intake linkage switch are respectively provided on the sealing silicone 3 and the atomizer core bracket 4. Figure 5 , 6 As shown, when the oil inlet and air inlet linkage switch 6 moves upward to the top where the sealing silicone 3 emerges, a channel for e-liquid to pass through the sealing silicone is formed between the oil passage hole 31 and the oil passage groove 61.

[0034] like Figure 7 As shown, the lower end of the oil and air intake linkage switch 6 is cylindrical. Figure 8 As shown, the bottom cover 5 has an air inlet 51 that mates with the lower end of the oil and air inlet linkage switch; and an air inlet cylinder 52 protrudes upward along the air inlet 52; the air inlet cylinder 52 forms an air inlet groove 53 axially. Figure 5 , 6 As shown in Figure 9, when the oil inlet and air inlet linkage switch 6 moves upward to the top where the sealing silicone 3 is exposed, and a channel for e-liquid to pass through the sealing silicone 3 is formed between the oil passage hole 31 and the oil passage groove 61, the air inlet groove 53 opens, forming an air passage connecting the inner and outer sides of the bottom cover 5.

[0035] A solenoid valve assembly and a steel pipe 62 are located in the middle of the oil and air intake linkage switch 6. The steel pipe 61 is axially positioned and fixed between the atomizer core bracket 4 and the bottom cover 5. A solenoid valve 63 is installed outside the steel pipe 62, and a magnet 64 that can move axially relative to it is installed inside the steel pipe 62. The magnet 64 is connected to the upper and lower ends of the oil and air intake linkage switch; when the solenoid valve 63 is energized in the forward direction, it drives the magnet 64 and the upper and lower ends of the oil and air intake linkage switch to move upward; when the solenoid valve 63 is energized in the reverse direction, it drives the magnet 64 and the upper and lower ends of the oil and air intake linkage switch to move downward.

[0036] like Figure 9 , 10 As shown, PCB board 7 is installed inside bottom cover 5, airflow sensing switch 8 is installed next to air inlet slot 53, and solenoid valve control circuit 9 can be installed on PCB board 7. Airflow sensing switch 8 senses the suction force and transmits the signal to microcontroller unit 71 on PCB board 7; microcontroller unit 71 outputs a corresponding signal to solenoid valve control circuit 9 according to the input signal; solenoid valve control circuit 9 controls the action of solenoid valve assembly according to the input signal, and the action of solenoid valve assembly controls the axial up and down movement of both ends of oil inlet and air inlet linkage switch 6.

[0037] Specifically, such as Figure 10 As shown, the microcontroller unit 71 of PCB board 7 is an integrated circuit of model QFEN24-3X3; the airflow sensing switch 8 is an integrated circuit of model CSC581X; and the solenoid valve control circuit 9 is mainly composed of an integrated circuit of model TC118S.

[0038] The first pin of the airflow sensing switch 8 is connected to the fourth pin of the microcontroller unit 71, and the second pin is connected to the third pin of the microcontroller unit. The second pin of the solenoid valve control circuit 9 integrated circuit is connected to the 21st pin of the microcontroller unit 71, and the third pin is connected to the 20th pin of the microcontroller unit.

[0039] The airflow sensor switch 8 collects the suction airflow and converts the signal into an electrical signal; this signal is sent to the microcontroller unit 71 via pin 1. The larger the collected airflow, the larger the output electrical signal value, and vice versa. The microcontroller unit 71 determines the suction duration based on the signal from pin 2 of the airflow sensor switch 8, which is used to control the output. Pins 21 and 20 of the microcontroller unit 71 output square waves to control the solenoid valve control circuit 9; when pin 21 outputs a square wave and pin 20 outputs a low level, the solenoid valve control circuit controls the solenoid valve to rise. When pin 20 outputs a square wave and pin 21 outputs a low level, the solenoid valve control circuit controls the solenoid valve to fall. The output voltage is controlled by adjusting the duty cycle of the square waves on pins 21 and 20 to control the height of the solenoid valve. The duty cycle of the square waves on pins 21 and 20 of the microcontroller unit is determined by the signal magnitude output from pin 1 of the airflow sensor switch 8, and the signal magnitude is directly proportional to the duty cycle.

[0040] The remaining parts of the electronic cigarette of this invention are unrelated to the implementation of the aforementioned scheme; they will not be described in detail here.

Claims

1. An electronic cigarette that automatically adapts to and switches on / off oil and air intake, comprising: The system comprises an oil tank, sealing silicone, an atomizer core assembly, an atomizer core support, a bottom cover, and a PCB board. The atomizer core assembly is axially arranged within the oil tank. An oil inlet is formed at the bottom of the atomizer core assembly. Sealing silicone is applied to the lower end of the atomizer core assembly and the inner wall support of the oil tank. An atomizer core support is positioned below the atomizer core assembly. The bottom cover is connected to the bottom of the oil tank. The PCB board is located within the bottom cover. The system is characterized by further including an oil / air inlet linkage switch, an airflow sensing switch, and a solenoid valve control circuit. An oil passage hole and a through hole, respectively, are formed on the sealing silicone and the atomizer core support to mate with the upper end of the oil / air inlet linkage switch. An air inlet hole is formed on the bottom cover to mate with the lower end of the oil / air inlet linkage switch. When the oil / air inlet linkage switch moves axially up and down, it can simultaneously open or close the oil passage hole and the air inlet hole, switching the oil passage from the oil tank and the oil passage hole to the oil inlet hole, and the air passage from the air inlet hole to the atomizer core assembly. The oil inlet and air inlet linkage switch is equipped with a solenoid valve assembly; the airflow sensing switch is installed in the air path to sense the magnitude of the suction force and transmit the signal to the microcontroller unit on the PCB board; the microcontroller unit outputs a corresponding signal to the solenoid valve control circuit according to the input signal; the solenoid valve control circuit controls the action of the solenoid valve assembly according to the input signal, and the action of the solenoid valve assembly controls the axial up and down movement of both ends of the oil inlet and air inlet linkage switch.

2. The electronic cigarette with automatic adaptive adjustment and switching of oil and air intake according to claim 1, characterized in that: The sealing silicone and the atomizing core support form an axial cavity; the oil inlet of the atomizing core assembly is located between the sealing silicone and the atomizing core support, and communicates with the aforementioned cavity.

3. The electronic cigarette with automatic adaptive adjustment and switching of oil and air intake according to claim 1, characterized in that: The upper end of the oil inlet and air inlet linkage switch is one or two columnar axial columns; several oil passage grooves are arranged along the axial direction near the top of the axial column; when the oil inlet and air inlet linkage switch moves upward to the top and protrudes above the sealing silicone, a channel is formed between the oil passage hole and the oil passage groove to allow the e-liquid to pass through the sealing silicone.

4. The electronic cigarette with automatic adaptive adjustment and switching of oil and air intake according to claim 2, characterized in that: The upper end of the oil inlet and air inlet linkage switch is one or two columnar axial columns; several oil passage grooves are arranged along the axial direction near the top of the axial column; when the oil inlet and air inlet linkage switch moves upward to the top and protrudes above the sealing silicone, a channel is formed between the oil passage hole and the oil passage groove to allow the e-liquid to pass through the sealing silicone.

5. The electronic cigarette with automatic adaptive adjustment and switching of oil and air intake according to claim 3 or 4, characterized in that: The lower end of the oil and air intake linkage switch is columnar; the bottom cover protrudes upward along the air intake hole to form an air intake cylinder; the air intake cylinder forms an air intake groove axially; when the oil and air intake linkage switch moves upward to the top and protrudes above the sealing silicone, forming a channel for e-liquid to pass through the sealing silicone between the oil passage hole and the oil groove, the air intake groove opens, forming an air passage connecting the inner and outer sides of the bottom cover.

6. The electronic cigarette with automatic adaptive adjustment and switching of oil and air intake according to any one of claims 1 to 4, characterized in that: The solenoid valve assembly of the oil and air intake linkage switch includes a solenoid valve and a magnet; a steel pipe is axially arranged in the middle of the oil and air intake linkage switch; the steel pipe is fixed between the atomizing core support and the bottom cover; a magnet that can move axially relative to the steel pipe is arranged inside the steel pipe; the magnet is connected to the upper and lower ends of the oil and air intake linkage switch; the solenoid valve is arranged outside the steel pipe; when the solenoid valve is energized in the forward direction, it drives the magnet and the upper and lower ends of the oil and air intake linkage switch to move upward; when the solenoid valve is energized in the reverse direction, it drives the magnet and the upper and lower ends of the oil and air intake linkage switch to move downward.

7. The electronic cigarette with automatic adaptive adjustment and switching of oil and air intake according to claim 5, characterized in that: The solenoid valve assembly of the oil and air intake linkage switch includes a solenoid valve and a magnet; a steel pipe is axially arranged in the middle of the oil and air intake linkage switch; the steel pipe is fixed between the atomizing core support and the bottom cover; a magnet that can move axially relative to the steel pipe is arranged inside the steel pipe; the magnet is connected to the upper and lower ends of the oil and air intake linkage switch; the solenoid valve is arranged outside the steel pipe; when the solenoid valve is energized in the forward direction, it drives the magnet and the upper and lower ends of the oil and air intake linkage switch to move upward; when the solenoid valve is energized in the reverse direction, it drives the magnet and the upper and lower ends of the oil and air intake linkage switch to move downward.

8. The electronic cigarette with automatic adaptive adjustment and switching of oil and air intake according to claim 7, characterized in that: The microcontroller unit of the PCB board is an integrated circuit of model QFEN24-3X3; the airflow sensing switch is an integrated circuit of model CSC581X; and the solenoid valve control circuit is mainly composed of an integrated circuit of model TC118S. The first pin of the airflow sensor switch is connected to the fourth pin of the microcontroller unit, and the second pin is connected to the third pin of the microcontroller unit. Pin 2 of the solenoid valve control circuit integrated circuit is connected to pin 21 of the microcontroller unit, and pin 3 is connected to pin 20 of the microcontroller unit; The airflow sensor switch collects the suction airflow and converts the signal into an electrical signal; this signal is sent to the microcontroller unit via pin 1. The larger the collected airflow, the larger the output electrical signal value, and vice versa. The microcontroller unit determines the suction duration based on the second pin signal of the airflow sensor switch to control the output. The microcontroller unit outputs square waves from pins 21 and 20 to control the solenoid valve control circuit. When pin 21 outputs a square wave and pin 20 outputs a low level, the solenoid valve control circuit controls the solenoid valve to rise; when pin 20 outputs a square wave and pin 21 outputs a low level, the solenoid valve control circuit controls the solenoid valve to fall. The output voltage is controlled by controlling the duty cycle of the square waves from pins 21 and 20 to control the height to which the solenoid valve rises. The duty cycle of the square wave on pins 21 and 20 of the microcontroller is determined by the signal magnitude output from pin 1 of the airflow sensing switch, and the signal magnitude is directly proportional to the duty cycle.

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